A pilot study on a 30 t/h biomass gasification-combustion plant

IF 5.6 2区 工程技术 Q2 ENERGY & FUELS
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Abstract

As a renewable energy with zero carbon emission, the utilization of biomass has attracted widely studied. One of the most effective methods is to gasify the biomass into high-quality gas fuel. In the recent years, the majority of research on biomass gasification is conducted in the laboratory. However, it lacks the research in engineering application scale. In this work, a biomass gasification-combustion plant was designed and built to provide the industrial steam with a rate of 30 t/h for a food industrial park. The agricultural and forestry waste biomass was gasified in a gasifier, and then the product gas combusted in a boiler to supply the steam. The characteristics of the product gas from the gasifier were studied. The corrosion and pollutants in the combustion process were investigated. In the gasification process, the main components of the product gas are CO, H2 and CH4. CO and H2 account for 29.55 vol%-30.56 vol% and 11.65 vol%-15.35 vol%, respectively. The calorific value of the product gas is 5.88–6.29 MJ/m3. The tar concentration is 110.58–155.07 g/Nm3. At the outlet of the boiler, the concentration of the filterable particulate matter is 300.25 mg/Nm3, and the particle size is concentrated at 1.00–2.50 μm. The concentration of the condensable particulate matter (CPM) is 157.14 mg/Nm3, and the proportion of water-soluble ions in CPM is 86.36 wt%. The concentration of Cl, SO42-, NH4+ and Na+ in CPM is relatively high, with the values of 28.83 mg/Nm3, 10.29 mg/Nm3, 7.46 mg/Nm3, and 5.06 mg/Nm3, respectively. During the half-year running, the ash deposition and corrosion were detected in the boiler heating surface and the economizer. The ash deposit in the boiler is mainly composed of the sulfate and silicate, such as CaSO4, Zn2SO4, Na2SO4 and K3Na(SO4)2. The ash deposit in the economizer is primarily composed of the sulfate and a small amount of alkali metal chloride. The flue gas reaches the emission requirement after passing through the pollution control devices and can be discharged into the atmosphere.

关于每小时 30 吨生物质气化燃烧厂的试点研究
作为一种零碳排放的可再生能源,生物质能的利用已引起广泛研究。其中最有效的方法是将生物质气化成高质量的气体燃料。近年来,有关生物质气化的研究大多在实验室中进行。但缺乏工程应用规模的研究。在这项工作中,设计并建造了一个生物质气化燃烧厂,为食品工业园提供 30 吨/小时的工业蒸汽。农林废弃生物质在气化炉中气化,然后在锅炉中燃烧产物气体以提供蒸汽。对气化炉产生的产品气体的特性进行了研究。研究了燃烧过程中的腐蚀和污染物。在气化过程中,产品气体的主要成分是 CO、H2 和 CH4。CO 和 H2 分别占 29.55 vol%-30.56 vol% 和 11.65 vol%-15.35 vol%。产品气体的热值为 5.88-6.29 MJ/m3。焦油浓度为 110.58-155.07 g/Nm3。在锅炉出口处,可过滤颗粒物的浓度为 300.25 mg/Nm3,粒径集中在 1.00-2.50 μm。可凝结颗粒物(CPM)的浓度为 157.14 mg/Nm3,CPM 中水溶性离子的比例为 86.36 wt%。CPM中Cl-、SO42-、NH4+和Na+的浓度相对较高,分别为28.83 mg/Nm3、10.29 mg/Nm3、7.46 mg/Nm3和5.06 mg/Nm3。在半年的运行过程中,锅炉受热面和省煤器均出现了灰渣沉积和腐蚀现象。锅炉内的灰渣主要由硫酸盐和硅酸盐组成,如 CaSO4、Zn2SO4、Na2SO4 和 K3Na(SO4)2。省煤器中的灰渣主要由硫酸盐和少量碱金属氯化物组成。烟气通过污染控制装置后达到排放要求,可以排入大气。
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来源期刊
Journal of The Energy Institute
Journal of The Energy Institute 工程技术-能源与燃料
CiteScore
10.60
自引率
5.30%
发文量
166
审稿时长
16 days
期刊介绍: The Journal of the Energy Institute provides peer reviewed coverage of original high quality research on energy, engineering and technology.The coverage is broad and the main areas of interest include: Combustion engineering and associated technologies; process heating; power generation; engines and propulsion; emissions and environmental pollution control; clean coal technologies; carbon abatement technologies Emissions and environmental pollution control; safety and hazards; Clean coal technologies; carbon abatement technologies, including carbon capture and storage, CCS; Petroleum engineering and fuel quality, including storage and transport Alternative energy sources; biomass utilisation and biomass conversion technologies; energy from waste, incineration and recycling Energy conversion, energy recovery and energy efficiency; space heating, fuel cells, heat pumps and cooling systems Energy storage The journal''s coverage reflects changes in energy technology that result from the transition to more efficient energy production and end use together with reduced carbon emission.
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